gma.c

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <commonlib/helpers.h>
#include <drivers/intel/gma/intel_bios.h>
#include <drivers/intel/gma/edid.h>
#include <drivers/intel/gma/i915.h>
#include <drivers/intel/gma/opregion.h>
#include <drivers/intel/gma/libgfxinit.h>
#include <pc80/vga.h>
 
#include "chip.h"
#include "drivers/intel/gma/i915_reg.h"
#include "x4x.h"
 
#define BASE_FREQUENCY 96000
 
static void gma_func0_init(struct device *dev)
{
        intel_gma_init_igd_opregion();
 
        if (!CONFIG(NO_GFX_INIT))
                pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_MASTER);
 
        /* configure GMBUSFREQ */
        pci_update_config16(dev, 0xcc, ~0x1ff, 0xbc);
 
        int vga_disable = (pci_read_config16(dev, D0F0_GGC) & 2) >> 1;
 
        if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
                if (vga_disable) {
                        printk(BIOS_INFO,
                               "IGD is not decoding legacy VGA MEM and IO: skipping NATIVE graphic init\n");
                } else {
                        int lightup_ok;
                        gma_gfxinit(&lightup_ok);
                }
        } else {
                pci_dev_init(dev);
        }
}
 
static void gma_func0_disable(struct device *dev)
{
        struct device *dev_host = pcidev_on_root(0, 0);
 
        /* VGA cycles to discrete GPU */
        pci_or_config16(dev_host, D0F0_GGC, 1 << 1);
}
 
static void gma_generate_ssdt(const struct device *device)
{
        const struct northbridge_intel_x4x_config *chip = device->chip_info;
 
        drivers_intel_gma_displays_ssdt_generate(&chip->gfx);
}
 
static const char *gma_acpi_name(const struct device *dev)
{
        return "GFX0";
}
 
static struct device_operations gma_func0_ops = {
        .read_resources         = pci_dev_read_resources,
        .set_resources          = pci_dev_set_resources,
        .enable_resources       = pci_dev_enable_resources,
        .acpi_fill_ssdt         = gma_generate_ssdt,
        .init                   = gma_func0_init,
        .ops_pci                = &pci_dev_ops_pci,
        .vga_disable            = gma_func0_disable,
        .acpi_name              = gma_acpi_name,
};
 
static const unsigned short pci_device_ids[] = {
        0x2e02, /* Eaglelake */
        0x2e12, /* Q43/Q45 */
        0x2e22, /* G43/G45 */
        0x2e32, /* G41 */
        0x2e42, /* B43 */
        0x2e92, /* B43_I */
        0
};
 
static const struct pci_driver gma __pci_driver = {
        .ops = &gma_func0_ops,
        .vendor = PCI_VID_INTEL,
        .devices = pci_device_ids,
};